Abstract
Changes in swimbladder morphology in an Atlantic herring Clupea harengus with pressure were examined by magnetic resonance imaging of a dead fish in a purpose-built pressure chamber. Swimbladder volume changed with pressure according to Boyle's Law, but compression in the lateral aspect was greater than in the dorsal aspect. This uneven compression has a reduced effect on acoustic backscattering than symmetrical compression and would elicit less pronounced effects of depth on acoustic biomass estimates of C. harengus.
| Original language | English |
|---|---|
| Pages (from-to) | 296-303 |
| Number of pages | 8 |
| Journal | Journal of Fish Biology |
| Volume | 74 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2009 |
Keywords
- Acoustic surveys
- Boyle's Law
- MRI
- Physostome
- Target strength
- Water pressure
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Aquatic Science
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